./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product47.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product47.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2bb4b23c61a0ce6fb5d219efb233ba1e5b1970509ba14aea9115d570a0ea376d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:37:28,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:37:28,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:37:28,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:37:28,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:37:28,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:37:28,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:37:28,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:37:28,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:37:28,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:37:28,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:37:28,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:37:28,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:37:28,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:37:28,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:37:28,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:37:28,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:37:28,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:37:28,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:37:28,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:37:28,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:37:28,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:37:28,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:37:28,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:37:28,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:37:28,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:37:28,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:37:28,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:37:28,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:37:28,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:37:28,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:37:28,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:37:28,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:37:28,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:37:28,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:37:28,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:37:28,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:37:28,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:37:28,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:37:28,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:37:28,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:37:28,856 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:37:28,881 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:37:28,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:37:28,881 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:37:28,881 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:37:28,882 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:37:28,882 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:37:28,883 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:37:28,883 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:37:28,883 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:37:28,883 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:37:28,884 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:37:28,884 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:37:28,884 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:37:28,884 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:37:28,884 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:37:28,885 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:37:28,885 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:37:28,885 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:37:28,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:37:28,886 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:37:28,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:37:28,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:37:28,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:37:28,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:37:28,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:37:28,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:37:28,888 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:37:28,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:37:28,888 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:37:28,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:37:28,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:37:28,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:37:28,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:37:28,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:37:28,889 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:37:28,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:37:28,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:37:28,890 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:37:28,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:37:28,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:37:28,891 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:37:28,891 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bb4b23c61a0ce6fb5d219efb233ba1e5b1970509ba14aea9115d570a0ea376d [2022-11-20 20:37:29,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:37:29,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:37:29,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:37:29,154 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:37:29,155 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:37:29,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/minepump_spec2_product47.cil.c [2022-11-20 20:37:32,354 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:37:32,663 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:37:32,668 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/sv-benchmarks/c/product-lines/minepump_spec2_product47.cil.c [2022-11-20 20:37:32,680 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/data/01d4d22ec/7d7526aa82144f429cf4947e1d81726b/FLAGc091f56a3 [2022-11-20 20:37:32,709 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/data/01d4d22ec/7d7526aa82144f429cf4947e1d81726b [2022-11-20 20:37:32,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:37:32,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:37:32,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:37:32,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:37:32,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:37:32,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:37:32" (1/1) ... [2022-11-20 20:37:32,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@393fe2c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:32, skipping insertion in model container [2022-11-20 20:37:32,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:37:32" (1/1) ... [2022-11-20 20:37:32,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:37:32,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:37:32,919 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/sv-benchmarks/c/product-lines/minepump_spec2_product47.cil.c[1605,1618] [2022-11-20 20:37:33,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:37:33,071 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:37:33,085 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/sv-benchmarks/c/product-lines/minepump_spec2_product47.cil.c[1605,1618] [2022-11-20 20:37:33,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:37:33,158 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:37:33,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:33 WrapperNode [2022-11-20 20:37:33,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:37:33,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:37:33,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:37:33,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:37:33,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:33" (1/1) ... [2022-11-20 20:37:33,182 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:33" (1/1) ... [2022-11-20 20:37:33,206 INFO L138 Inliner]: procedures = 56, calls = 102, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 193 [2022-11-20 20:37:33,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:37:33,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:37:33,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:37:33,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:37:33,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:33" (1/1) ... [2022-11-20 20:37:33,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:33" (1/1) ... [2022-11-20 20:37:33,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:33" (1/1) ... [2022-11-20 20:37:33,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:33" (1/1) ... [2022-11-20 20:37:33,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:33" (1/1) ... [2022-11-20 20:37:33,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:33" (1/1) ... [2022-11-20 20:37:33,232 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:33" (1/1) ... [2022-11-20 20:37:33,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:33" (1/1) ... [2022-11-20 20:37:33,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:37:33,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:37:33,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:37:33,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:37:33,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:33" (1/1) ... [2022-11-20 20:37:33,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:37:33,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:37:33,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:37:33,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:37:33,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:37:33,320 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-20 20:37:33,320 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-20 20:37:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-20 20:37:33,321 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-20 20:37:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-20 20:37:33,321 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-20 20:37:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-20 20:37:33,321 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-20 20:37:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-20 20:37:33,322 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-20 20:37:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2022-11-20 20:37:33,322 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2022-11-20 20:37:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2022-11-20 20:37:33,322 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2022-11-20 20:37:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-11-20 20:37:33,323 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-11-20 20:37:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:37:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-20 20:37:33,323 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-20 20:37:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:37:33,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:37:33,402 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:37:33,404 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:37:33,811 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:37:33,941 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:37:33,942 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 20:37:33,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:37:33 BoogieIcfgContainer [2022-11-20 20:37:33,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:37:33,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:37:33,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:37:33,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:37:33,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:37:32" (1/3) ... [2022-11-20 20:37:33,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dcf95a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:37:33, skipping insertion in model container [2022-11-20 20:37:33,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:33" (2/3) ... [2022-11-20 20:37:33,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dcf95a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:37:33, skipping insertion in model container [2022-11-20 20:37:33,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:37:33" (3/3) ... [2022-11-20 20:37:33,958 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product47.cil.c [2022-11-20 20:37:33,996 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:37:33,996 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:37:34,047 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:37:34,054 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e2154d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:37:34,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:37:34,059 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 54 states have internal predecessors, (64), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-20 20:37:34,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 20:37:34,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:34,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:37:34,071 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:37:34,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:34,076 INFO L85 PathProgramCache]: Analyzing trace with hash 198426105, now seen corresponding path program 1 times [2022-11-20 20:37:34,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:37:34,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570679230] [2022-11-20 20:37:34,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:34,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:37:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:34,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:37:34,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:37:34,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570679230] [2022-11-20 20:37:34,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570679230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:37:34,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:37:34,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:37:34,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200523182] [2022-11-20 20:37:34,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:37:34,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:37:34,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:37:34,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:37:34,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:37:34,308 INFO L87 Difference]: Start difference. First operand has 72 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 54 states have internal predecessors, (64), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 20:37:34,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:37:34,377 INFO L93 Difference]: Finished difference Result 142 states and 193 transitions. [2022-11-20 20:37:34,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:37:34,380 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-20 20:37:34,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:37:34,389 INFO L225 Difference]: With dead ends: 142 [2022-11-20 20:37:34,390 INFO L226 Difference]: Without dead ends: 67 [2022-11-20 20:37:34,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:37:34,397 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:37:34,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:37:34,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-20 20:37:34,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-11-20 20:37:34,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 50 states have internal predecessors, (56), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 20:37:34,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2022-11-20 20:37:34,443 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 17 [2022-11-20 20:37:34,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:37:34,444 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2022-11-20 20:37:34,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 20:37:34,444 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2022-11-20 20:37:34,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 20:37:34,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:34,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:37:34,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:37:34,448 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:37:34,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:34,449 INFO L85 PathProgramCache]: Analyzing trace with hash -290554321, now seen corresponding path program 1 times [2022-11-20 20:37:34,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:37:34,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381083281] [2022-11-20 20:37:34,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:34,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:37:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:34,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:37:34,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:37:34,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381083281] [2022-11-20 20:37:34,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381083281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:37:34,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:37:34,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:37:34,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498049794] [2022-11-20 20:37:34,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:37:34,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:37:34,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:37:34,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:37:34,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:37:34,619 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 20:37:34,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:37:34,693 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2022-11-20 20:37:34,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:37:34,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-20 20:37:34,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:37:34,695 INFO L225 Difference]: With dead ends: 106 [2022-11-20 20:37:34,695 INFO L226 Difference]: Without dead ends: 59 [2022-11-20 20:37:34,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:37:34,697 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 14 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:37:34,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 107 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:37:34,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-20 20:37:34,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-11-20 20:37:34,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 45 states have internal predecessors, (50), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-20 20:37:34,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 76 transitions. [2022-11-20 20:37:34,707 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 76 transitions. Word has length 18 [2022-11-20 20:37:34,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:37:34,708 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 76 transitions. [2022-11-20 20:37:34,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 20:37:34,708 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 76 transitions. [2022-11-20 20:37:34,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-20 20:37:34,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:34,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:37:34,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:37:34,710 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:37:34,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:34,711 INFO L85 PathProgramCache]: Analyzing trace with hash 101083766, now seen corresponding path program 1 times [2022-11-20 20:37:34,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:37:34,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589997169] [2022-11-20 20:37:34,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:34,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:37:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:34,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:37:34,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:37:34,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589997169] [2022-11-20 20:37:34,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589997169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:37:34,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:37:34,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:37:34,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179021171] [2022-11-20 20:37:34,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:37:34,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:37:34,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:37:34,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:37:34,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:37:34,795 INFO L87 Difference]: Start difference. First operand 59 states and 76 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 20:37:34,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:37:34,867 INFO L93 Difference]: Finished difference Result 173 states and 225 transitions. [2022-11-20 20:37:34,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:37:34,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-11-20 20:37:34,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:37:34,870 INFO L225 Difference]: With dead ends: 173 [2022-11-20 20:37:34,870 INFO L226 Difference]: Without dead ends: 116 [2022-11-20 20:37:34,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:37:34,872 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 63 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:37:34,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 143 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:37:34,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-20 20:37:34,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2022-11-20 20:37:34,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 70 states have (on average 1.3571428571428572) internal successors, (95), 85 states have internal predecessors, (95), 26 states have call successors, (26), 16 states have call predecessors, (26), 16 states have return successors, (26), 19 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-20 20:37:34,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 147 transitions. [2022-11-20 20:37:34,894 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 147 transitions. Word has length 21 [2022-11-20 20:37:34,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:37:34,895 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 147 transitions. [2022-11-20 20:37:34,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 20:37:34,895 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 147 transitions. [2022-11-20 20:37:34,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 20:37:34,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:34,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:37:34,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:37:34,898 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:37:34,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:34,898 INFO L85 PathProgramCache]: Analyzing trace with hash -421871571, now seen corresponding path program 1 times [2022-11-20 20:37:34,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:37:34,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479179220] [2022-11-20 20:37:34,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:34,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:37:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:35,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:37:35,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:37:35,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479179220] [2022-11-20 20:37:35,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479179220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:37:35,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:37:35,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:37:35,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544012122] [2022-11-20 20:37:35,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:37:35,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:37:35,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:37:35,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:37:35,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:37:35,018 INFO L87 Difference]: Start difference. First operand 113 states and 147 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 20:37:35,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:37:35,139 INFO L93 Difference]: Finished difference Result 224 states and 296 transitions. [2022-11-20 20:37:35,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:37:35,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-11-20 20:37:35,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:37:35,142 INFO L225 Difference]: With dead ends: 224 [2022-11-20 20:37:35,145 INFO L226 Difference]: Without dead ends: 222 [2022-11-20 20:37:35,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:37:35,148 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 52 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:37:35,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 133 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:37:35,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-20 20:37:35,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2022-11-20 20:37:35,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 137 states have (on average 1.3503649635036497) internal successors, (185), 166 states have internal predecessors, (185), 52 states have call successors, (52), 32 states have call predecessors, (52), 32 states have return successors, (56), 38 states have call predecessors, (56), 52 states have call successors, (56) [2022-11-20 20:37:35,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 293 transitions. [2022-11-20 20:37:35,186 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 293 transitions. Word has length 24 [2022-11-20 20:37:35,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:37:35,187 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 293 transitions. [2022-11-20 20:37:35,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 20:37:35,187 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 293 transitions. [2022-11-20 20:37:35,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 20:37:35,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:35,190 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:37:35,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 20:37:35,191 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:37:35,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:35,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1790829096, now seen corresponding path program 1 times [2022-11-20 20:37:35,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:37:35,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418333559] [2022-11-20 20:37:35,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:35,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:37:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:35,443 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:37:35,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:37:35,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418333559] [2022-11-20 20:37:35,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418333559] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:37:35,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468627369] [2022-11-20 20:37:35,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:35,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:37:35,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:37:35,451 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:37:35,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:37:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:35,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 20:37:35,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:37:35,680 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 20:37:35,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:37:35,817 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 20:37:35,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468627369] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:37:35,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [381920887] [2022-11-20 20:37:35,838 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-20 20:37:35,838 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:37:35,842 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:37:35,847 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:37:35,848 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:37:38,844 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 124 for LOIs [2022-11-20 20:37:39,178 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 114 for LOIs [2022-11-20 20:37:39,189 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:37:46,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [381920887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:37:46,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:37:46,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [7, 5, 5] total 27 [2022-11-20 20:37:46,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820826837] [2022-11-20 20:37:46,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:37:46,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 20:37:46,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:37:46,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 20:37:46,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2022-11-20 20:37:46,877 INFO L87 Difference]: Start difference. First operand 222 states and 293 transitions. Second operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 20:37:49,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:37:49,975 INFO L93 Difference]: Finished difference Result 519 states and 699 transitions. [2022-11-20 20:37:49,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 20:37:49,978 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 1.5) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-11-20 20:37:49,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:37:49,981 INFO L225 Difference]: With dead ends: 519 [2022-11-20 20:37:49,981 INFO L226 Difference]: Without dead ends: 299 [2022-11-20 20:37:49,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 110 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=184, Invalid=686, Unknown=0, NotChecked=0, Total=870 [2022-11-20 20:37:49,983 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 81 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:37:49,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 345 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 20:37:49,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-20 20:37:50,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 279. [2022-11-20 20:37:50,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 179 states have (on average 1.329608938547486) internal successors, (238), 209 states have internal predecessors, (238), 60 states have call successors, (60), 39 states have call predecessors, (60), 39 states have return successors, (67), 45 states have call predecessors, (67), 60 states have call successors, (67) [2022-11-20 20:37:50,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 365 transitions. [2022-11-20 20:37:50,041 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 365 transitions. Word has length 44 [2022-11-20 20:37:50,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:37:50,041 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 365 transitions. [2022-11-20 20:37:50,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 1.5) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 20:37:50,041 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 365 transitions. [2022-11-20 20:37:50,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 20:37:50,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:50,044 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:37:50,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:37:50,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:37:50,251 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:37:50,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:50,251 INFO L85 PathProgramCache]: Analyzing trace with hash 579601810, now seen corresponding path program 1 times [2022-11-20 20:37:50,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:37:50,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117792253] [2022-11-20 20:37:50,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:50,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:37:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:50,412 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:37:50,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:37:50,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117792253] [2022-11-20 20:37:50,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117792253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:37:50,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:37:50,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 20:37:50,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210512969] [2022-11-20 20:37:50,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:37:50,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 20:37:50,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:37:50,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 20:37:50,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:37:50,422 INFO L87 Difference]: Start difference. First operand 279 states and 365 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 20:37:50,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:37:50,747 INFO L93 Difference]: Finished difference Result 775 states and 1048 transitions. [2022-11-20 20:37:50,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:37:50,748 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 47 [2022-11-20 20:37:50,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:37:50,756 INFO L225 Difference]: With dead ends: 775 [2022-11-20 20:37:50,757 INFO L226 Difference]: Without dead ends: 555 [2022-11-20 20:37:50,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:37:50,762 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 117 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:37:50,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 213 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:37:50,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-11-20 20:37:50,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 515. [2022-11-20 20:37:50,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 343 states have (on average 1.2682215743440233) internal successors, (435), 373 states have internal predecessors, (435), 88 states have call successors, (88), 73 states have call predecessors, (88), 83 states have return successors, (127), 87 states have call predecessors, (127), 88 states have call successors, (127) [2022-11-20 20:37:50,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 650 transitions. [2022-11-20 20:37:50,876 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 650 transitions. Word has length 47 [2022-11-20 20:37:50,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:37:50,879 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 650 transitions. [2022-11-20 20:37:50,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 20:37:50,879 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 650 transitions. [2022-11-20 20:37:50,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-20 20:37:50,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:50,891 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:37:50,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 20:37:50,891 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:37:50,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:50,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1849141451, now seen corresponding path program 1 times [2022-11-20 20:37:50,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:37:50,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476727807] [2022-11-20 20:37:50,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:50,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:37:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:50,978 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:37:50,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:37:50,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476727807] [2022-11-20 20:37:50,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476727807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:37:50,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:37:50,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:37:50,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114253494] [2022-11-20 20:37:50,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:37:50,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:37:50,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:37:50,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:37:50,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:37:50,983 INFO L87 Difference]: Start difference. First operand 515 states and 650 transitions. Second operand has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 20:37:51,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:37:51,116 INFO L93 Difference]: Finished difference Result 566 states and 716 transitions. [2022-11-20 20:37:51,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:37:51,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 63 [2022-11-20 20:37:51,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:37:51,119 INFO L225 Difference]: With dead ends: 566 [2022-11-20 20:37:51,119 INFO L226 Difference]: Without dead ends: 259 [2022-11-20 20:37:51,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:37:51,123 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 94 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:37:51,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 134 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:37:51,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-11-20 20:37:51,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2022-11-20 20:37:51,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 172 states have (on average 1.2267441860465116) internal successors, (211), 186 states have internal predecessors, (211), 44 states have call successors, (44), 37 states have call predecessors, (44), 42 states have return successors, (65), 44 states have call predecessors, (65), 44 states have call successors, (65) [2022-11-20 20:37:51,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 320 transitions. [2022-11-20 20:37:51,203 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 320 transitions. Word has length 63 [2022-11-20 20:37:51,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:37:51,204 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 320 transitions. [2022-11-20 20:37:51,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 20:37:51,206 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 320 transitions. [2022-11-20 20:37:51,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-20 20:37:51,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:51,210 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:37:51,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 20:37:51,210 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:37:51,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:51,211 INFO L85 PathProgramCache]: Analyzing trace with hash -731027187, now seen corresponding path program 1 times [2022-11-20 20:37:51,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:37:51,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313806488] [2022-11-20 20:37:51,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:51,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:37:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:51,569 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:37:51,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:37:51,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313806488] [2022-11-20 20:37:51,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313806488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:37:51,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:37:51,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 20:37:51,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733468693] [2022-11-20 20:37:51,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:37:51,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:37:51,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:37:51,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:37:51,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:37:51,571 INFO L87 Difference]: Start difference. First operand 259 states and 320 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-20 20:37:51,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:37:51,881 INFO L93 Difference]: Finished difference Result 565 states and 709 transitions. [2022-11-20 20:37:51,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:37:51,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) Word has length 71 [2022-11-20 20:37:51,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:37:51,884 INFO L225 Difference]: With dead ends: 565 [2022-11-20 20:37:51,884 INFO L226 Difference]: Without dead ends: 337 [2022-11-20 20:37:51,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:37:51,886 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 164 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:37:51,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 171 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:37:51,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-11-20 20:37:51,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 261. [2022-11-20 20:37:51,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 173 states have (on average 1.2196531791907514) internal successors, (211), 187 states have internal predecessors, (211), 43 states have call successors, (43), 39 states have call predecessors, (43), 44 states have return successors, (61), 44 states have call predecessors, (61), 43 states have call successors, (61) [2022-11-20 20:37:51,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 315 transitions. [2022-11-20 20:37:51,931 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 315 transitions. Word has length 71 [2022-11-20 20:37:51,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:37:51,931 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 315 transitions. [2022-11-20 20:37:51,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-20 20:37:51,932 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 315 transitions. [2022-11-20 20:37:51,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-20 20:37:51,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:51,935 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:37:51,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 20:37:51,936 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:37:51,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:51,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1142075611, now seen corresponding path program 1 times [2022-11-20 20:37:51,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:37:51,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024277160] [2022-11-20 20:37:51,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:51,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:37:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:52,139 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 20:37:52,140 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:37:52,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024277160] [2022-11-20 20:37:52,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024277160] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:37:52,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424104521] [2022-11-20 20:37:52,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:52,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:37:52,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:37:52,143 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:37:52,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:37:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:52,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 20:37:52,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:37:52,287 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 20:37:52,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:37:52,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424104521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:37:52,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:37:52,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-20 20:37:52,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948237446] [2022-11-20 20:37:52,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:37:52,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:37:52,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:37:52,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:37:52,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:37:52,289 INFO L87 Difference]: Start difference. First operand 261 states and 315 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 20:37:52,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:37:52,381 INFO L93 Difference]: Finished difference Result 474 states and 578 transitions. [2022-11-20 20:37:52,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:37:52,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 74 [2022-11-20 20:37:52,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:37:52,384 INFO L225 Difference]: With dead ends: 474 [2022-11-20 20:37:52,384 INFO L226 Difference]: Without dead ends: 249 [2022-11-20 20:37:52,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 20:37:52,387 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 47 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:37:52,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 168 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:37:52,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-11-20 20:37:52,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 225. [2022-11-20 20:37:52,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 148 states have (on average 1.2094594594594594) internal successors, (179), 160 states have internal predecessors, (179), 37 states have call successors, (37), 34 states have call predecessors, (37), 39 states have return successors, (51), 38 states have call predecessors, (51), 37 states have call successors, (51) [2022-11-20 20:37:52,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 267 transitions. [2022-11-20 20:37:52,429 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 267 transitions. Word has length 74 [2022-11-20 20:37:52,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:37:52,432 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 267 transitions. [2022-11-20 20:37:52,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 20:37:52,432 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 267 transitions. [2022-11-20 20:37:52,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-20 20:37:52,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:52,433 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:37:52,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 20:37:52,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 20:37:52,640 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:37:52,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:52,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1071957119, now seen corresponding path program 1 times [2022-11-20 20:37:52,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:37:52,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685967486] [2022-11-20 20:37:52,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:52,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:37:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:52,815 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:37:52,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:37:52,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685967486] [2022-11-20 20:37:52,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685967486] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:37:52,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527000369] [2022-11-20 20:37:52,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:52,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:37:52,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:37:52,823 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:37:52,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:37:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:52,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 20:37:52,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:37:52,965 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 20:37:52,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:37:52,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527000369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:37:52,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:37:52,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-20 20:37:52,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815729304] [2022-11-20 20:37:52,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:37:52,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:37:52,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:37:52,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:37:52,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:37:52,968 INFO L87 Difference]: Start difference. First operand 225 states and 267 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 20:37:53,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:37:53,110 INFO L93 Difference]: Finished difference Result 412 states and 505 transitions. [2022-11-20 20:37:53,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:37:53,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 76 [2022-11-20 20:37:53,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:37:53,113 INFO L225 Difference]: With dead ends: 412 [2022-11-20 20:37:53,114 INFO L226 Difference]: Without dead ends: 223 [2022-11-20 20:37:53,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 20:37:53,115 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 44 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:37:53,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 185 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:37:53,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-20 20:37:53,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 215. [2022-11-20 20:37:53,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 144 states have (on average 1.1875) internal successors, (171), 156 states have internal predecessors, (171), 35 states have call successors, (35), 32 states have call predecessors, (35), 35 states have return successors, (47), 36 states have call predecessors, (47), 35 states have call successors, (47) [2022-11-20 20:37:53,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 253 transitions. [2022-11-20 20:37:53,165 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 253 transitions. Word has length 76 [2022-11-20 20:37:53,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:37:53,165 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 253 transitions. [2022-11-20 20:37:53,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 20:37:53,166 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 253 transitions. [2022-11-20 20:37:53,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 20:37:53,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:53,167 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:37:53,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 20:37:53,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 20:37:53,374 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:37:53,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:53,374 INFO L85 PathProgramCache]: Analyzing trace with hash -372818780, now seen corresponding path program 1 times [2022-11-20 20:37:53,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:37:53,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012834877] [2022-11-20 20:37:53,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:53,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:37:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:53,533 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 20:37:53,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:37:53,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012834877] [2022-11-20 20:37:53,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012834877] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:37:53,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836152344] [2022-11-20 20:37:53,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:53,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:37:53,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:37:53,535 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:37:53,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 20:37:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:53,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 20:37:53,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:37:53,915 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 20:37:53,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:37:54,123 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 20:37:54,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836152344] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 20:37:54,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:37:54,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 5] total 11 [2022-11-20 20:37:54,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546629656] [2022-11-20 20:37:54,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:37:54,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 20:37:54,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:37:54,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 20:37:54,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:37:54,127 INFO L87 Difference]: Start difference. First operand 215 states and 253 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 20:37:54,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:37:54,331 INFO L93 Difference]: Finished difference Result 594 states and 711 transitions. [2022-11-20 20:37:54,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:37:54,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 79 [2022-11-20 20:37:54,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:37:54,334 INFO L225 Difference]: With dead ends: 594 [2022-11-20 20:37:54,334 INFO L226 Difference]: Without dead ends: 381 [2022-11-20 20:37:54,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 153 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:37:54,336 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 40 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:37:54,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 288 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:37:54,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-11-20 20:37:54,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 361. [2022-11-20 20:37:54,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 244 states have (on average 1.1721311475409837) internal successors, (286), 260 states have internal predecessors, (286), 58 states have call successors, (58), 53 states have call predecessors, (58), 58 states have return successors, (76), 60 states have call predecessors, (76), 58 states have call successors, (76) [2022-11-20 20:37:54,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 420 transitions. [2022-11-20 20:37:54,413 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 420 transitions. Word has length 79 [2022-11-20 20:37:54,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:37:54,413 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 420 transitions. [2022-11-20 20:37:54,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 20:37:54,413 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 420 transitions. [2022-11-20 20:37:54,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-20 20:37:54,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:54,415 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:37:54,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 20:37:54,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:37:54,621 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:37:54,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:54,622 INFO L85 PathProgramCache]: Analyzing trace with hash -207363698, now seen corresponding path program 1 times [2022-11-20 20:37:54,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:37:54,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976006420] [2022-11-20 20:37:54,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:54,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:37:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:54,876 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 20:37:54,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:37:54,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976006420] [2022-11-20 20:37:54,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976006420] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:37:54,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852110273] [2022-11-20 20:37:54,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:54,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:37:54,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:37:54,878 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:37:54,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 20:37:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:54,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 20:37:54,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:37:55,139 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:37:55,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:37:55,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852110273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:37:55,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:37:55,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 19 [2022-11-20 20:37:55,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115165312] [2022-11-20 20:37:55,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:37:55,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 20:37:55,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:37:55,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 20:37:55,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-11-20 20:37:55,141 INFO L87 Difference]: Start difference. First operand 361 states and 420 transitions. Second operand has 11 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 20:37:55,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:37:55,617 INFO L93 Difference]: Finished difference Result 712 states and 855 transitions. [2022-11-20 20:37:55,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 20:37:55,618 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) Word has length 82 [2022-11-20 20:37:55,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:37:55,621 INFO L225 Difference]: With dead ends: 712 [2022-11-20 20:37:55,621 INFO L226 Difference]: Without dead ends: 499 [2022-11-20 20:37:55,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2022-11-20 20:37:55,623 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 49 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:37:55,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 712 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:37:55,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-11-20 20:37:55,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 484. [2022-11-20 20:37:55,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 329 states have (on average 1.1641337386018238) internal successors, (383), 347 states have internal predecessors, (383), 77 states have call successors, (77), 71 states have call predecessors, (77), 77 states have return successors, (109), 79 states have call predecessors, (109), 77 states have call successors, (109) [2022-11-20 20:37:55,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 569 transitions. [2022-11-20 20:37:55,730 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 569 transitions. Word has length 82 [2022-11-20 20:37:55,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:37:55,731 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 569 transitions. [2022-11-20 20:37:55,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 20:37:55,731 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 569 transitions. [2022-11-20 20:37:55,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-20 20:37:55,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:55,734 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:37:55,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 20:37:55,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:37:55,948 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:37:55,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:55,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1287559360, now seen corresponding path program 1 times [2022-11-20 20:37:55,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:37:55,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056661754] [2022-11-20 20:37:55,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:55,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:37:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:56,357 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 20:37:56,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:37:56,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056661754] [2022-11-20 20:37:56,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056661754] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:37:56,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189887251] [2022-11-20 20:37:56,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:56,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:37:56,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:37:56,359 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:37:56,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 20:37:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:56,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 20:37:56,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:37:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 20:37:56,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:37:57,313 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 20:37:57,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189887251] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:37:57,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1548983080] [2022-11-20 20:37:57,316 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2022-11-20 20:37:57,316 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:37:57,317 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:37:57,317 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:37:57,317 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:38:05,499 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 130 for LOIs [2022-11-20 20:38:05,514 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 37 for LOIs [2022-11-20 20:38:05,939 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 51 for LOIs [2022-11-20 20:38:06,217 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 46 for LOIs [2022-11-20 20:38:06,273 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 41 for LOIs [2022-11-20 20:38:06,278 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 32 for LOIs [2022-11-20 20:38:06,281 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 48 for LOIs [2022-11-20 20:38:06,287 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:38:14,449 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14463#(and (<= ~methaneLevelCritical~0 1) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~3#1| ~methaneLevelCritical~0) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~10#1|) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (<= |old(~pumpRunning~0)| 2147483647) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1|) (= 1 ~systemActive~0) (<= 0 ~methAndRunningLastTime~0) (<= 0 |old(~methAndRunningLastTime~0)|) (<= |old(~methAndRunningLastTime~0)| 1) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~3#1| 0)) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~10#1|) (<= 0 ~methaneLevelCritical~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1| 0)) (not (= ~methAndRunningLastTime~0 0)) (<= ~methAndRunningLastTime~0 1) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-20 20:38:14,449 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:38:14,449 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:38:14,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 29 [2022-11-20 20:38:14,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221083141] [2022-11-20 20:38:14,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:38:14,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 20:38:14,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:38:14,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 20:38:14,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=4105, Unknown=0, NotChecked=0, Total=4556 [2022-11-20 20:38:14,452 INFO L87 Difference]: Start difference. First operand 484 states and 569 transitions. Second operand has 29 states, 21 states have (on average 4.904761904761905) internal successors, (103), 20 states have internal predecessors, (103), 7 states have call successors, (29), 5 states have call predecessors, (29), 14 states have return successors, (30), 15 states have call predecessors, (30), 7 states have call successors, (30) [2022-11-20 20:38:18,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:38:18,258 INFO L93 Difference]: Finished difference Result 1161 states and 1458 transitions. [2022-11-20 20:38:18,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-20 20:38:18,259 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 21 states have (on average 4.904761904761905) internal successors, (103), 20 states have internal predecessors, (103), 7 states have call successors, (29), 5 states have call predecessors, (29), 14 states have return successors, (30), 15 states have call predecessors, (30), 7 states have call successors, (30) Word has length 85 [2022-11-20 20:38:18,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:38:18,263 INFO L225 Difference]: With dead ends: 1161 [2022-11-20 20:38:18,263 INFO L226 Difference]: Without dead ends: 739 [2022-11-20 20:38:18,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 215 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4959 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=1262, Invalid=12780, Unknown=0, NotChecked=0, Total=14042 [2022-11-20 20:38:18,270 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 645 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 2609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:38:18,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 1157 Invalid, 2609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 20:38:18,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-11-20 20:38:18,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 562. [2022-11-20 20:38:18,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 378 states have (on average 1.1534391534391535) internal successors, (436), 399 states have internal predecessors, (436), 91 states have call successors, (91), 83 states have call predecessors, (91), 92 states have return successors, (122), 93 states have call predecessors, (122), 91 states have call successors, (122) [2022-11-20 20:38:18,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 649 transitions. [2022-11-20 20:38:18,382 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 649 transitions. Word has length 85 [2022-11-20 20:38:18,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:38:18,382 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 649 transitions. [2022-11-20 20:38:18,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 21 states have (on average 4.904761904761905) internal successors, (103), 20 states have internal predecessors, (103), 7 states have call successors, (29), 5 states have call predecessors, (29), 14 states have return successors, (30), 15 states have call predecessors, (30), 7 states have call successors, (30) [2022-11-20 20:38:18,383 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 649 transitions. [2022-11-20 20:38:18,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-20 20:38:18,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:38:18,386 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:38:18,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 20:38:18,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 20:38:18,592 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:38:18,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:38:18,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1362279203, now seen corresponding path program 1 times [2022-11-20 20:38:18,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:38:18,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149102533] [2022-11-20 20:38:18,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:38:18,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:38:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:38:18,846 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-20 20:38:18,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:38:18,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149102533] [2022-11-20 20:38:18,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149102533] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:38:18,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071278293] [2022-11-20 20:38:18,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:38:18,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:38:18,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:38:18,848 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:38:18,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 20:38:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:38:18,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 20:38:18,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:38:19,037 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 20:38:19,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:38:19,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071278293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:38:19,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:38:19,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 13 [2022-11-20 20:38:19,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583905878] [2022-11-20 20:38:19,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:38:19,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 20:38:19,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:38:19,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 20:38:19,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:38:19,040 INFO L87 Difference]: Start difference. First operand 562 states and 649 transitions. Second operand has 11 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (19), 6 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-20 20:38:19,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:38:19,431 INFO L93 Difference]: Finished difference Result 977 states and 1138 transitions. [2022-11-20 20:38:19,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 20:38:19,431 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (19), 6 states have call predecessors, (19), 3 states have call successors, (19) Word has length 122 [2022-11-20 20:38:19,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:38:19,432 INFO L225 Difference]: With dead ends: 977 [2022-11-20 20:38:19,432 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 20:38:19,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-11-20 20:38:19,435 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 54 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:38:19,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 315 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:38:19,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 20:38:19,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 20:38:19,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:38:19,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 20:38:19,437 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 122 [2022-11-20 20:38:19,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:38:19,437 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 20:38:19,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (19), 6 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-20 20:38:19,437 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 20:38:19,437 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 20:38:19,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 20:38:19,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 20:38:19,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 20:38:19,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 20:38:34,116 INFO L895 garLoopResultBuilder]: At program point deactivatePumpENTRY(lines 818 825) the Hoare annotation is: (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= 0 ~systemActive~0)) [2022-11-20 20:38:34,116 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 818 825) no Hoare annotation was computed. [2022-11-20 20:38:34,117 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 734 740) no Hoare annotation was computed. [2022-11-20 20:38:34,117 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 734 740) the Hoare annotation is: true [2022-11-20 20:38:34,117 INFO L895 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 636 647) the Hoare annotation is: (let ((.cse1 (= |old(~methaneLevelCritical~0)| 0)) (.cse2 (= ~methaneLevelCritical~0 0)) (.cse0 (not (= 1 ~systemActive~0))) (.cse3 (not (= ~methAndRunningLastTime~0 0)))) (and (or (not (= ~pumpRunning~0 0)) .cse0 .cse1 (not .cse2) .cse3) (or (not .cse1) .cse2 .cse0 .cse3))) [2022-11-20 20:38:34,117 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 636 647) no Hoare annotation was computed. [2022-11-20 20:38:34,117 INFO L895 garLoopResultBuilder]: At program point L787(line 787) the Hoare annotation is: (and (or (not (= |old(~methAndRunningLastTime~0)| 0)) (not (= 1 ~systemActive~0)) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (or (= |old(~waterLevel~0)| ~waterLevel~0) (= ~waterLevel~0 1)))) (or (not (= |old(~pumpRunning~0)| 0)) (not (= 0 ~systemActive~0)))) [2022-11-20 20:38:34,118 INFO L895 garLoopResultBuilder]: At program point L787-1(lines 768 792) the Hoare annotation is: (let ((.cse10 (= |old(~pumpRunning~0)| 0)) (.cse3 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse8 (= ~pumpRunning~0 0)) (.cse11 (= 1 ~systemActive~0)) (.cse7 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse6 (and .cse3 .cse8 .cse11 (or .cse7 (= ~waterLevel~0 1)))) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (not .cse11)) (.cse4 (= ~methAndRunningLastTime~0 0)) (.cse5 (= ~methaneLevelCritical~0 0)) (.cse0 (not .cse10))) (and (or .cse0 .cse1 (not (= |old(~waterLevel~0)| 1)) .cse2 (and .cse3 .cse4)) (or .cse0 .cse1 .cse5 .cse2 .cse6) (or .cse0 .cse1 .cse2 (and .cse4 .cse7 (= ~pumpRunning~0 1)) .cse6) (let ((.cse9 (= |timeShift_processEnvironment_~tmp~6#1| ~methaneLevelCritical~0))) (or .cse1 (and .cse8 .cse9 (not (= |timeShift_processEnvironment_~tmp~6#1| 0))) .cse2 .cse10 (and .cse3 .cse4 .cse5 .cse9))) (or .cse0 (not (= 0 ~systemActive~0)))))) [2022-11-20 20:38:34,118 INFO L899 garLoopResultBuilder]: For program point L721-1(lines 721 727) no Hoare annotation was computed. [2022-11-20 20:38:34,118 INFO L899 garLoopResultBuilder]: For program point L486(lines 486 496) no Hoare annotation was computed. [2022-11-20 20:38:34,119 INFO L895 garLoopResultBuilder]: At program point L482(lines 482 499) the Hoare annotation is: (let ((.cse10 (= |old(~pumpRunning~0)| 0))) (let ((.cse2 (not (= 0 ~systemActive~0))) (.cse0 (not .cse10)) (.cse4 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse9 (not (= 1 ~systemActive~0))) (.cse11 (= ~methAndRunningLastTime~0 0)) (.cse5 (= ~methaneLevelCritical~0 0)) (.cse1 (= ~pumpRunning~0 0)) (.cse7 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~3#1| ~methaneLevelCritical~0)) (.cse6 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or .cse0 .cse1 .cse2) (let ((.cse3 (select |#memory_int| 1))) (or (not (= (select |#length| 12) 25)) .cse0 (not (= (select .cse3 0) 48)) (not (= |#NULL.offset| 0)) (not (= 9 (select |#length| 11))) .cse4 (not (= 9 (select |#length| 5))) (not (= 30 (select |#length| 7))) (not (= 31 (select |#length| 2))) (not (= (select |#valid| 12) 1)) (not (= 2 (select |#length| 1))) (not (= 9 (select |#length| 14))) (not (= |old(~waterLevel~0)| 1)) (not (= (select |#length| 15) 25)) (not (= (select |#valid| 6) 1)) (not (< 0 |#StackHeapBarrier|)) (not (= (select |#valid| 3) 1)) (not (= ~head~0.offset 0)) (not (= (select |#valid| 11) 1)) (not (= (select |#length| 9) 21)) (not (= 30 (select |#length| 10))) (not (= (select |#valid| 15) 1)) (not (= (select |#length| 6) 21)) (not (= 1 (select |#valid| 5))) (not (= (select |#length| 8) 9)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not .cse5) (not (= (select .cse3 1) 0)) (not (= (select |#valid| 1) 1)) (and (<= |timeShift___utac_acc__Specification2_spec__2_~tmp~3#1| 0) (<= 0 |timeShift___utac_acc__Specification2_spec__2_~tmp~3#1|) .cse6 (= |old(~methAndRunningLastTime~0)| ~methAndRunningLastTime~0)) (not (= (select |#valid| 8) 1)) (not (= 30 (select |#length| 13))) (not (= (select |#valid| 4) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 7) 1)) (not (= (select |#valid| 10) 1)) (not (= (select |#valid| 14) 1)) (not (= (select |#valid| 13) 1)) (not (= 30 (select |#length| 4))) (not (= (select |#valid| 2) 1)) (not (= (select |#valid| 9) 1)) (not (= ~head~0.base 0)) .cse2 (not (= ~cleanupTimeShifts~0 4)))) (let ((.cse8 (= |timeShift_processEnvironment_~tmp~6#1| ~methaneLevelCritical~0))) (or (and .cse1 .cse7 .cse8 (not (= |timeShift_processEnvironment_~tmp~6#1| 0))) .cse4 .cse9 .cse10 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse11 .cse5 .cse7 .cse8))) (let ((.cse12 (= ~waterLevel~0 1))) (or .cse0 .cse4 .cse9 (and (not .cse12) .cse11 .cse5 .cse7 .cse6 (= ~pumpRunning~0 1)) (and .cse1 .cse7 (or .cse6 .cse12))))))) [2022-11-20 20:38:34,120 INFO L895 garLoopResultBuilder]: At program point L482-1(lines 474 502) the Hoare annotation is: (let ((.cse12 (= 1 ~systemActive~0)) (.cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse7 (= ~waterLevel~0 1)) (.cse16 (= |old(~pumpRunning~0)| 0))) (let ((.cse5 (not (= 0 ~systemActive~0))) (.cse1 (not .cse16)) (.cse13 (or .cse0 .cse7)) (.cse3 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse11 (= ~pumpRunning~0 0)) (.cse14 (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1| 0)) (.cse6 (not .cse12)) (.cse10 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse8 (= ~methAndRunningLastTime~0 0)) (.cse4 (= ~methaneLevelCritical~0 0)) (.cse9 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~3#1| ~methaneLevelCritical~0))) (and (let ((.cse2 (select |#memory_int| 1))) (or (and (<= |timeShift___utac_acc__Specification2_spec__2_~tmp~3#1| 0) (<= 0 |timeShift___utac_acc__Specification2_spec__2_~tmp~3#1|) .cse0) (not (= (select |#length| 12) 25)) .cse1 (not (= (select .cse2 0) 48)) (not (= |#NULL.offset| 0)) (not (= 9 (select |#length| 11))) .cse3 (not (= 9 (select |#length| 5))) (not (= 30 (select |#length| 7))) (not (= 31 (select |#length| 2))) (not (= (select |#valid| 12) 1)) (not (= 2 (select |#length| 1))) (not (= 9 (select |#length| 14))) (not (= |old(~waterLevel~0)| 1)) (not (= (select |#length| 15) 25)) (not (= (select |#valid| 6) 1)) (not (< 0 |#StackHeapBarrier|)) (not (= (select |#valid| 3) 1)) (not (= ~head~0.offset 0)) (not (= (select |#valid| 11) 1)) (not (= (select |#length| 9) 21)) (not (= 30 (select |#length| 10))) (not (= (select |#valid| 15) 1)) (not (= (select |#length| 6) 21)) (not (= 1 (select |#valid| 5))) (not (= (select |#length| 8) 9)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not .cse4) (not (= (select .cse2 1) 0)) (not (= (select |#valid| 1) 1)) (not (= (select |#valid| 8) 1)) (not (= 30 (select |#length| 13))) (not (= (select |#valid| 4) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 7) 1)) (not (= (select |#valid| 10) 1)) (not (= (select |#valid| 14) 1)) (not (= (select |#valid| 13) 1)) (not (= 30 (select |#length| 4))) (not (= (select |#valid| 2) 1)) (not (= (select |#valid| 9) 1)) (not (= ~head~0.base 0)) .cse5 (not (= ~cleanupTimeShifts~0 4)))) (or .cse1 .cse3 .cse6 (and (not .cse7) .cse8 .cse9 .cse0 (= ~pumpRunning~0 1)) (and .cse10 .cse11 .cse8 .cse9 .cse12 .cse13)) (or .cse1 .cse5 (and .cse11 .cse8)) (or .cse1 .cse3 .cse4 .cse6 (and .cse10 .cse11 .cse8 .cse14 .cse12 .cse13)) (let ((.cse15 (= |timeShift_processEnvironment_~tmp~6#1| ~methaneLevelCritical~0))) (or .cse3 (and .cse11 .cse8 .cse9 .cse15 .cse14 (not (= |timeShift_processEnvironment_~tmp~6#1| 0))) .cse6 .cse16 (and .cse10 .cse8 .cse4 .cse9 .cse15)))))) [2022-11-20 20:38:34,121 INFO L899 garLoopResultBuilder]: For program point L714-1(lines 713 732) no Hoare annotation was computed. [2022-11-20 20:38:34,121 INFO L899 garLoopResultBuilder]: For program point L776(lines 776 784) no Hoare annotation was computed. [2022-11-20 20:38:34,121 INFO L899 garLoopResultBuilder]: For program point L487(lines 487 493) no Hoare annotation was computed. [2022-11-20 20:38:34,121 INFO L899 garLoopResultBuilder]: For program point L772(lines 772 789) no Hoare annotation was computed. [2022-11-20 20:38:34,121 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (and (or (not (= |old(~methAndRunningLastTime~0)| 0)) (not (= 1 ~systemActive~0))) (or (not (= |old(~pumpRunning~0)| 0)) (not (= 0 ~systemActive~0)))) [2022-11-20 20:38:34,122 INFO L895 garLoopResultBuilder]: At program point L480(line 480) the Hoare annotation is: (let ((.cse4 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse8 (= ~pumpRunning~0 0)) (.cse14 (= 1 ~systemActive~0)) (.cse11 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse13 (= |old(~pumpRunning~0)| 0))) (let ((.cse2 (not (= |old(~waterLevel~0)| 1))) (.cse9 (not (= 0 ~systemActive~0))) (.cse0 (not .cse13)) (.cse7 (and .cse4 .cse8 .cse14 (or .cse11 (= ~waterLevel~0 1)))) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse3 (not .cse14)) (.cse5 (= ~methAndRunningLastTime~0 0)) (.cse6 (= ~methaneLevelCritical~0 0))) (and (or .cse0 .cse1 .cse2 .cse3 (and .cse4 .cse5)) (or .cse0 .cse1 .cse6 .cse3 .cse7) (or .cse0 .cse8 .cse9) (let ((.cse10 (select |#memory_int| 1))) (or (not (= (select |#length| 12) 25)) .cse0 (not (= (select .cse10 0) 48)) (not (= |#NULL.offset| 0)) (not (= 9 (select |#length| 11))) .cse1 (not (= 9 (select |#length| 5))) (not (= 30 (select |#length| 7))) (not (= 31 (select |#length| 2))) (not (= (select |#valid| 12) 1)) (not (= 2 (select |#length| 1))) (not (= 9 (select |#length| 14))) .cse2 (not (= (select |#length| 15) 25)) (not (= (select |#valid| 6) 1)) (not (< 0 |#StackHeapBarrier|)) (not (= (select |#valid| 3) 1)) (not (= ~head~0.offset 0)) (not (= (select |#valid| 11) 1)) (not (= (select |#length| 9) 21)) (not (= 30 (select |#length| 10))) (not (= (select |#valid| 15) 1)) (not (= (select |#length| 6) 21)) (not (= 1 (select |#valid| 5))) (not (= (select |#length| 8) 9)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not .cse6) (not (= (select .cse10 1) 0)) (not (= (select |#valid| 1) 1)) (not (= (select |#valid| 8) 1)) (not (= 30 (select |#length| 13))) (not (= (select |#valid| 4) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 7) 1)) (not (= (select |#valid| 10) 1)) .cse11 (not (= (select |#valid| 14) 1)) (not (= (select |#valid| 13) 1)) (not (= 30 (select |#length| 4))) (not (= (select |#valid| 2) 1)) (not (= (select |#valid| 9) 1)) (not (= ~head~0.base 0)) .cse9 (not (= ~cleanupTimeShifts~0 4)))) (or .cse0 .cse1 .cse5 .cse9) (or .cse0 .cse1 .cse3 (and .cse5 .cse11 (= ~pumpRunning~0 1)) .cse7) (let ((.cse12 (= |timeShift_processEnvironment_~tmp~6#1| ~methaneLevelCritical~0))) (or .cse1 (and .cse8 .cse12 (not (= |timeShift_processEnvironment_~tmp~6#1| 0))) .cse3 .cse13 (and .cse4 .cse5 .cse6 .cse12)))))) [2022-11-20 20:38:34,122 INFO L899 garLoopResultBuilder]: For program point L480-1(line 480) no Hoare annotation was computed. [2022-11-20 20:38:34,123 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 710 733) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 0 ~systemActive~0))) (.cse5 (= ~methAndRunningLastTime~0 0)) (.cse4 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse3 (not (= |old(~methAndRunningLastTime~0)| 0)))) (and (or .cse0 (= ~pumpRunning~0 0) .cse1) (let ((.cse2 (select |#memory_int| 1))) (or (not (= (select |#length| 12) 25)) .cse0 (not (= (select .cse2 0) 48)) (not (= |#NULL.offset| 0)) (not (= 9 (select |#length| 11))) .cse3 (not (= 9 (select |#length| 5))) (not (= 30 (select |#length| 7))) (not (= 31 (select |#length| 2))) (not (= (select |#valid| 12) 1)) (not (= 2 (select |#length| 1))) (not (= 9 (select |#length| 14))) (not (= |old(~waterLevel~0)| 1)) (not (= (select |#length| 15) 25)) (not (= (select |#valid| 6) 1)) (not (< 0 |#StackHeapBarrier|)) (not (= (select |#valid| 3) 1)) (not (= ~head~0.offset 0)) (not (= (select |#valid| 11) 1)) (not (= (select |#length| 9) 21)) (not (= 30 (select |#length| 10))) (not (= (select |#valid| 15) 1)) (not (= (select |#length| 6) 21)) (not (= 1 (select |#valid| 5))) (not (= (select |#length| 8) 9)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= ~methaneLevelCritical~0 0)) (not (= (select .cse2 1) 0)) (not (= (select |#valid| 1) 1)) (not (= (select |#valid| 8) 1)) (not (= 30 (select |#length| 13))) (not (= (select |#valid| 4) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 7) 1)) (not (= (select |#valid| 10) 1)) .cse4 (not (= (select |#valid| 14) 1)) (not (= (select |#valid| 13) 1)) (not (= 30 (select |#length| 4))) (not (= (select |#valid| 2) 1)) (not (= (select |#valid| 9) 1)) (not (= ~head~0.base 0)) .cse1 (not (= ~cleanupTimeShifts~0 4)))) (or .cse0 .cse3 .cse5 .cse1) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse5 .cse4) .cse3 (not (= 1 ~systemActive~0))))) [2022-11-20 20:38:34,123 INFO L895 garLoopResultBuilder]: At program point L782(line 782) the Hoare annotation is: (and (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= ~methAndRunningLastTime~0 0) (not (= ~pumpRunning~0 0)) (= ~methaneLevelCritical~0 0) (= |timeShift_processEnvironment_~tmp~6#1| ~methaneLevelCritical~0)) (not (= |old(~methAndRunningLastTime~0)| 0)) (not (= 1 ~systemActive~0))) (or (not (= |old(~pumpRunning~0)| 0)) (not (= 0 ~systemActive~0)))) [2022-11-20 20:38:34,124 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 710 733) no Hoare annotation was computed. [2022-11-20 20:38:34,124 INFO L895 garLoopResultBuilder]: At program point L778(line 778) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or (not (= |old(~methAndRunningLastTime~0)| 0)) (not (= 1 ~systemActive~0)) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 (= |timeShift_processEnvironment_~tmp~6#1| ~methaneLevelCritical~0) (not (= |timeShift_processEnvironment_~tmp~6#1| 0)))) (or .cse0 (not (= 0 ~systemActive~0))))) [2022-11-20 20:38:34,124 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2022-11-20 20:38:34,124 INFO L895 garLoopResultBuilder]: At program point L774(line 774) the Hoare annotation is: (and (or (not (= |old(~methAndRunningLastTime~0)| 0)) (not (= 1 ~systemActive~0)) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= ~methAndRunningLastTime~0 0) (not (= ~pumpRunning~0 0)))) (or (not (= |old(~pumpRunning~0)| 0)) (not (= 0 ~systemActive~0)))) [2022-11-20 20:38:34,125 INFO L899 garLoopResultBuilder]: For program point L774-1(line 774) no Hoare annotation was computed. [2022-11-20 20:38:34,125 INFO L902 garLoopResultBuilder]: At program point L512(line 512) the Hoare annotation is: true [2022-11-20 20:38:34,125 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 506 535) no Hoare annotation was computed. [2022-11-20 20:38:34,125 INFO L899 garLoopResultBuilder]: For program point L512-1(line 512) no Hoare annotation was computed. [2022-11-20 20:38:34,125 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 506 535) the Hoare annotation is: true [2022-11-20 20:38:34,125 INFO L902 garLoopResultBuilder]: At program point L531(lines 506 535) the Hoare annotation is: true [2022-11-20 20:38:34,125 INFO L899 garLoopResultBuilder]: For program point L527(line 527) no Hoare annotation was computed. [2022-11-20 20:38:34,126 INFO L899 garLoopResultBuilder]: For program point L520(lines 520 524) no Hoare annotation was computed. [2022-11-20 20:38:34,126 INFO L902 garLoopResultBuilder]: At program point L520-1(lines 520 524) the Hoare annotation is: true [2022-11-20 20:38:34,126 INFO L902 garLoopResultBuilder]: At program point L516-2(lines 516 530) the Hoare annotation is: true [2022-11-20 20:38:34,126 INFO L902 garLoopResultBuilder]: At program point isMethaneLevelCriticalENTRY(lines 648 656) the Hoare annotation is: true [2022-11-20 20:38:34,126 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 648 656) no Hoare annotation was computed. [2022-11-20 20:38:34,126 INFO L895 garLoopResultBuilder]: At program point L907(line 907) the Hoare annotation is: (and (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (not (= 0 ~systemActive~0))) [2022-11-20 20:38:34,127 INFO L899 garLoopResultBuilder]: For program point L928(lines 927 974) no Hoare annotation was computed. [2022-11-20 20:38:34,127 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-20 20:38:34,127 INFO L899 garLoopResultBuilder]: For program point L957(lines 957 970) no Hoare annotation was computed. [2022-11-20 20:38:34,127 INFO L895 garLoopResultBuilder]: At program point L949(line 949) the Hoare annotation is: (let ((.cse1 (= 1 ~systemActive~0)) (.cse3 (= ~pumpRunning~0 0)) (.cse0 (= ~methAndRunningLastTime~0 0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (= ~methaneLevelCritical~0 0) .cse1 .cse2) (and .cse3 .cse0 .cse1 .cse2) (and .cse3 .cse0 .cse2 (= 0 ~systemActive~0)))) [2022-11-20 20:38:34,127 INFO L902 garLoopResultBuilder]: At program point L978(lines 917 982) the Hoare annotation is: true [2022-11-20 20:38:34,127 INFO L899 garLoopResultBuilder]: For program point L937(lines 937 943) no Hoare annotation was computed. [2022-11-20 20:38:34,127 INFO L899 garLoopResultBuilder]: For program point L937-1(lines 937 943) no Hoare annotation was computed. [2022-11-20 20:38:34,128 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 20:38:34,128 INFO L895 garLoopResultBuilder]: At program point L975(lines 926 976) the Hoare annotation is: false [2022-11-20 20:38:34,128 INFO L899 garLoopResultBuilder]: For program point L905(lines 905 911) no Hoare annotation was computed. [2022-11-20 20:38:34,128 INFO L895 garLoopResultBuilder]: At program point L905-1(lines 905 911) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (not (= 0 ~systemActive~0))) (and .cse0 (= ~methAndRunningLastTime~0 0) .cse1))) [2022-11-20 20:38:34,128 INFO L899 garLoopResultBuilder]: For program point L963(lines 963 969) no Hoare annotation was computed. [2022-11-20 20:38:34,128 INFO L895 garLoopResultBuilder]: At program point L963-2(lines 957 970) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= ~pumpRunning~0 0) .cse0 (= 0 ~systemActive~0)) (and (= ~methAndRunningLastTime~0 0) (= 1 ~systemActive~0) .cse0))) [2022-11-20 20:38:34,129 INFO L899 garLoopResultBuilder]: For program point L947(lines 947 953) no Hoare annotation was computed. [2022-11-20 20:38:34,129 INFO L899 garLoopResultBuilder]: For program point L947-1(lines 947 953) no Hoare annotation was computed. [2022-11-20 20:38:34,129 INFO L895 garLoopResultBuilder]: At program point L592(lines 592 599) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (= (select |#length| 9) 21) (= 30 (select |#length| 7)) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select |#valid| 15) 1) (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= (select |#valid| 9) 1) (= (select |#length| 12) 25) (= (select |#valid| 11) 1) (= ~methaneLevelCritical~0 0) (= 30 (select |#length| 4)) (= 31 (select |#length| 2)) (= ~head~0.offset 0) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= 30 (select |#length| 13)) (= 1 ~systemActive~0) (= 30 (select |#length| 10)) (= (select |#valid| 12) 1) (= |ULTIMATE.start_valid_product_#res#1| |ULTIMATE.start_main_~tmp~4#1|) (= (select |#valid| 4) 1) (= (select |#valid| 1) 1) (= (select |#length| 6) 21) (= (select |#valid| 14) 1) (= |ULTIMATE.start_valid_product_~retValue_acc~1#1| |ULTIMATE.start_valid_product_#res#1|) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (= ~head~0.base 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= 9 (select |#length| 11)) (= ~waterLevel~0 1) (= |ULTIMATE.start_valid_product_~retValue_acc~1#1| 1) (= (select .cse0 0) 48) (= (select |#valid| 6) 1) (= (select .cse0 1) 0) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= (select |#valid| 13) 1) (< 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))) [2022-11-20 20:38:34,129 INFO L902 garLoopResultBuilder]: At program point L592-2(lines 592 599) the Hoare annotation is: true [2022-11-20 20:38:34,130 INFO L895 garLoopResultBuilder]: At program point L972(lines 927 974) the Hoare annotation is: (let ((.cse1 (= 1 ~systemActive~0)) (.cse3 (= ~pumpRunning~0 0)) (.cse0 (= ~methAndRunningLastTime~0 0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (= ~methaneLevelCritical~0 0) .cse1 .cse2) (and .cse3 .cse0 .cse1 .cse2) (and .cse3 .cse0 .cse2 (= 0 ~systemActive~0)))) [2022-11-20 20:38:34,130 INFO L895 garLoopResultBuilder]: At program point L939(line 939) the Hoare annotation is: (let ((.cse1 (= 1 ~systemActive~0)) (.cse3 (= ~pumpRunning~0 0)) (.cse0 (= ~methAndRunningLastTime~0 0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (= ~methaneLevelCritical~0 0) .cse1 .cse2) (and .cse3 .cse0 .cse1 .cse2) (and .cse3 .cse0 .cse2 (= 0 ~systemActive~0)))) [2022-11-20 20:38:34,130 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 624 635) no Hoare annotation was computed. [2022-11-20 20:38:34,130 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 624 635) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1 .cse2) (or (not (= ~pumpRunning~0 0)) .cse0 .cse1 .cse2))) [2022-11-20 20:38:34,130 INFO L895 garLoopResultBuilder]: At program point L756(line 756) the Hoare annotation is: (let ((.cse3 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (not .cse3)) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 (= ~pumpRunning~0 0) .cse1 .cse2) (or .cse1 .cse3 (not (= ~methaneLevelCritical~0 0)) .cse2) (or (not (= ~waterLevel~0 1)) .cse0 (= |processEnvironment__wrappee__methaneQuery_~tmp~5#1| 0) .cse1 .cse2)))) [2022-11-20 20:38:34,130 INFO L899 garLoopResultBuilder]: For program point L750(lines 750 758) no Hoare annotation was computed. [2022-11-20 20:38:34,131 INFO L895 garLoopResultBuilder]: At program point L746(lines 746 763) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (= ~methAndRunningLastTime~0 0)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse0 .cse1) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1))) [2022-11-20 20:38:34,131 INFO L895 garLoopResultBuilder]: At program point L806(line 806) the Hoare annotation is: (let ((.cse3 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (not .cse3)) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 (= ~pumpRunning~0 0) .cse1 .cse2) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2) (or .cse1 .cse3 (not (= ~methaneLevelCritical~0 0)) .cse2)))) [2022-11-20 20:38:34,131 INFO L895 garLoopResultBuilder]: At program point L806-1(line 806) the Hoare annotation is: (let ((.cse3 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (not .cse3)) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__methaneQuery_activatePump_#t~ret38#1| ~methaneLevelCritical~0)) .cse2) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2) (or .cse1 .cse3 (not (= ~methaneLevelCritical~0 0)) .cse2)))) [2022-11-20 20:38:34,131 INFO L895 garLoopResultBuilder]: At program point L761(line 761) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (= ~methAndRunningLastTime~0 0)))) (and (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1))) [2022-11-20 20:38:34,131 INFO L899 garLoopResultBuilder]: For program point L761-1(lines 742 766) no Hoare annotation was computed. [2022-11-20 20:38:34,132 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__methaneQueryENTRY(lines 742 766) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (= ~methAndRunningLastTime~0 0)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse0 .cse1) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1))) [2022-11-20 20:38:34,132 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 742 766) no Hoare annotation was computed. [2022-11-20 20:38:34,132 INFO L902 garLoopResultBuilder]: At program point isMethaneAlarmENTRY(lines 826 836) the Hoare annotation is: true [2022-11-20 20:38:34,132 INFO L902 garLoopResultBuilder]: At program point L831(line 831) the Hoare annotation is: true [2022-11-20 20:38:34,132 INFO L899 garLoopResultBuilder]: For program point L831-1(line 831) no Hoare annotation was computed. [2022-11-20 20:38:34,132 INFO L899 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 826 836) no Hoare annotation was computed. [2022-11-20 20:38:34,136 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:38:34,138 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:38:34,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:38:34 BoogieIcfgContainer [2022-11-20 20:38:34,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:38:34,172 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:38:34,172 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:38:34,172 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:38:34,173 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:37:33" (3/4) ... [2022-11-20 20:38:34,175 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 20:38:34,181 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2022-11-20 20:38:34,181 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-20 20:38:34,181 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-20 20:38:34,181 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-20 20:38:34,182 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-20 20:38:34,182 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2022-11-20 20:38:34,182 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-20 20:38:34,182 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2022-11-20 20:38:34,182 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2022-11-20 20:38:34,189 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 45 nodes and edges [2022-11-20 20:38:34,189 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-20 20:38:34,190 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-20 20:38:34,190 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 20:38:34,191 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 20:38:34,215 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((((((((((((((((((((((unknown-#length-unknown[15] == 25 && 9 == unknown-#length-unknown[5]) && unknown-#length-unknown[9] == 21) && 30 == unknown-#length-unknown[7]) && 1 == \valid[5]) && unknown-#length-unknown[3] == 12) && \valid[15] == 1) && pumpRunning == 0) && methAndRunningLastTime == 0) && \valid[9] == 1) && unknown-#length-unknown[12] == 25) && \valid[11] == 1) && methaneLevelCritical == 0) && 30 == unknown-#length-unknown[4]) && 31 == unknown-#length-unknown[2]) && head == 0) && 2 == unknown-#length-unknown[1]) && unknown-#length-unknown[8] == 9) && \valid[3] == 1) && \valid[7] == 1) && 30 == unknown-#length-unknown[13]) && 1 == systemActive) && 30 == unknown-#length-unknown[10]) && \valid[12] == 1) && \result == tmp) && \valid[4] == 1) && \valid[1] == 1) && unknown-#length-unknown[6] == 21) && \valid[14] == 1) && retValue_acc == \result) && 9 == unknown-#length-unknown[14]) && \valid[0] == 0) && head == 0) && \valid[2] == 1) && #NULL == 0) && 9 == unknown-#length-unknown[11]) && waterLevel == 1) && retValue_acc == 1) && unknown-#memory_int-unknown[1][0] == 48) && \valid[6] == 1) && unknown-#memory_int-unknown[1][1] == 0) && \valid[10] == 1) && \valid[8] == 1) && \valid[13] == 1) && 0 < unknown-#StackHeapBarrier-unknown) && cleanupTimeShifts == 4) && #NULL == 0 [2022-11-20 20:38:34,216 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive)) && ((((((((((((((((((((((((((((((((((((((((((((!(unknown-#length-unknown[12] == 25) || !(\old(pumpRunning) == 0)) || !(unknown-#memory_int-unknown[1][0] == 48)) || !(#NULL == 0)) || !(9 == unknown-#length-unknown[11])) || !(\old(methAndRunningLastTime) == 0)) || !(9 == unknown-#length-unknown[5])) || !(30 == unknown-#length-unknown[7])) || !(31 == unknown-#length-unknown[2])) || !(\valid[12] == 1)) || !(2 == unknown-#length-unknown[1])) || !(9 == unknown-#length-unknown[14])) || !(\old(waterLevel) == 1)) || !(unknown-#length-unknown[15] == 25)) || !(\valid[6] == 1)) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(head == 0)) || !(\valid[11] == 1)) || !(unknown-#length-unknown[9] == 21)) || !(30 == unknown-#length-unknown[10])) || !(\valid[15] == 1)) || !(unknown-#length-unknown[6] == 21)) || !(1 == \valid[5])) || !(unknown-#length-unknown[8] == 9)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(methaneLevelCritical == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(\valid[1] == 1)) || !(\valid[8] == 1)) || !(30 == unknown-#length-unknown[13])) || !(\valid[4] == 1)) || !(#NULL == 0)) || !(\valid[7] == 1)) || !(\valid[10] == 1)) || \old(waterLevel) == waterLevel) || !(\valid[14] == 1)) || !(\valid[13] == 1)) || !(30 == unknown-#length-unknown[4])) || !(\valid[2] == 1)) || !(\valid[9] == 1)) || !(head == 0)) || !(0 == systemActive)) || !(cleanupTimeShifts == 4))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || methAndRunningLastTime == 0) || !(0 == systemActive))) && ((((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) [2022-11-20 20:38:34,217 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0)) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || methaneLevelCritical == 0) || !(1 == systemActive)) || (((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && 1 == systemActive) && (\old(waterLevel) == waterLevel || waterLevel == 1)))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((methAndRunningLastTime == 0 && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || (((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && 1 == systemActive) && (\old(waterLevel) == waterLevel || waterLevel == 1)))) && ((((!(\old(methAndRunningLastTime) == 0) || ((pumpRunning == 0 && tmp == methaneLevelCritical) && !(tmp == 0))) || !(1 == systemActive)) || \old(pumpRunning) == 0) || (((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == methaneLevelCritical))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) [2022-11-20 20:38:34,217 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(methAndRunningLastTime == 0)) && (((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(methAndRunningLastTime == 0)) [2022-11-20 20:38:34,218 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive)) && ((((((((((((((((((((((((((((((((((((((((((((!(unknown-#length-unknown[12] == 25) || !(\old(pumpRunning) == 0)) || !(unknown-#memory_int-unknown[1][0] == 48)) || !(#NULL == 0)) || !(9 == unknown-#length-unknown[11])) || !(\old(methAndRunningLastTime) == 0)) || !(9 == unknown-#length-unknown[5])) || !(30 == unknown-#length-unknown[7])) || !(31 == unknown-#length-unknown[2])) || !(\valid[12] == 1)) || !(2 == unknown-#length-unknown[1])) || !(9 == unknown-#length-unknown[14])) || !(\old(waterLevel) == 1)) || !(unknown-#length-unknown[15] == 25)) || !(\valid[6] == 1)) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(head == 0)) || !(\valid[11] == 1)) || !(unknown-#length-unknown[9] == 21)) || !(30 == unknown-#length-unknown[10])) || !(\valid[15] == 1)) || !(unknown-#length-unknown[6] == 21)) || !(1 == \valid[5])) || !(unknown-#length-unknown[8] == 9)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(methaneLevelCritical == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(\valid[1] == 1)) || (((tmp <= 0 && 0 <= tmp) && \old(waterLevel) == waterLevel) && \old(methAndRunningLastTime) == methAndRunningLastTime)) || !(\valid[8] == 1)) || !(30 == unknown-#length-unknown[13])) || !(\valid[4] == 1)) || !(#NULL == 0)) || !(\valid[7] == 1)) || !(\valid[10] == 1)) || !(\valid[14] == 1)) || !(\valid[13] == 1)) || !(30 == unknown-#length-unknown[4])) || !(\valid[2] == 1)) || !(\valid[9] == 1)) || !(head == 0)) || !(0 == systemActive)) || !(cleanupTimeShifts == 4))) && (((((((pumpRunning == 0 && tmp == methaneLevelCritical) && tmp == methaneLevelCritical) && !(tmp == 0)) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || \old(pumpRunning) == 0) || ((((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || (((((!(waterLevel == 1) && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == methaneLevelCritical) && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || ((pumpRunning == 0 && tmp == methaneLevelCritical) && (\old(waterLevel) == waterLevel || waterLevel == 1))) [2022-11-20 20:38:34,218 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((((((((((((((((((((((((((tmp <= 0 && 0 <= tmp) && \old(waterLevel) == waterLevel) || !(unknown-#length-unknown[12] == 25)) || !(\old(pumpRunning) == 0)) || !(unknown-#memory_int-unknown[1][0] == 48)) || !(#NULL == 0)) || !(9 == unknown-#length-unknown[11])) || !(\old(methAndRunningLastTime) == 0)) || !(9 == unknown-#length-unknown[5])) || !(30 == unknown-#length-unknown[7])) || !(31 == unknown-#length-unknown[2])) || !(\valid[12] == 1)) || !(2 == unknown-#length-unknown[1])) || !(9 == unknown-#length-unknown[14])) || !(\old(waterLevel) == 1)) || !(unknown-#length-unknown[15] == 25)) || !(\valid[6] == 1)) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(head == 0)) || !(\valid[11] == 1)) || !(unknown-#length-unknown[9] == 21)) || !(30 == unknown-#length-unknown[10])) || !(\valid[15] == 1)) || !(unknown-#length-unknown[6] == 21)) || !(1 == \valid[5])) || !(unknown-#length-unknown[8] == 9)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(methaneLevelCritical == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(\valid[1] == 1)) || !(\valid[8] == 1)) || !(30 == unknown-#length-unknown[13])) || !(\valid[4] == 1)) || !(#NULL == 0)) || !(\valid[7] == 1)) || !(\valid[10] == 1)) || !(\valid[14] == 1)) || !(\valid[13] == 1)) || !(30 == unknown-#length-unknown[4])) || !(\valid[2] == 1)) || !(\valid[9] == 1)) || !(head == 0)) || !(0 == systemActive)) || !(cleanupTimeShifts == 4)) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((((!(waterLevel == 1) && methAndRunningLastTime == 0) && tmp == methaneLevelCritical) && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || (((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && methAndRunningLastTime == 0) && tmp == methaneLevelCritical) && 1 == systemActive) && (\old(waterLevel) == waterLevel || waterLevel == 1)))) && ((!(\old(pumpRunning) == 0) || !(0 == systemActive)) || (pumpRunning == 0 && methAndRunningLastTime == 0))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || methaneLevelCritical == 0) || !(1 == systemActive)) || (((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && methAndRunningLastTime == 0) && tmp___0 == 0) && 1 == systemActive) && (\old(waterLevel) == waterLevel || waterLevel == 1)))) && ((((!(\old(methAndRunningLastTime) == 0) || (((((pumpRunning == 0 && methAndRunningLastTime == 0) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical) && tmp___0 == 0) && !(tmp == 0))) || !(1 == systemActive)) || \old(pumpRunning) == 0) || ((((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical)) [2022-11-20 20:38:34,219 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || (pumpRunning == 0 && aux-isMethaneAlarm()-aux == methaneLevelCritical)) || !(methAndRunningLastTime == 0)) && (((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || !(methAndRunningLastTime == 0))) && (((!(1 == systemActive) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) || !(methAndRunningLastTime == 0)) [2022-11-20 20:38:34,220 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) [2022-11-20 20:38:34,242 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 20:38:34,242 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:38:34,243 INFO L158 Benchmark]: Toolchain (without parser) took 61529.38ms. Allocated memory was 180.4MB in the beginning and 654.3MB in the end (delta: 474.0MB). Free memory was 133.9MB in the beginning and 459.1MB in the end (delta: -325.2MB). Peak memory consumption was 151.1MB. Max. memory is 16.1GB. [2022-11-20 20:38:34,243 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 134.2MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:38:34,244 INFO L158 Benchmark]: CACSL2BoogieTranslator took 444.30ms. Allocated memory is still 180.4MB. Free memory was 133.5MB in the beginning and 114.7MB in the end (delta: 18.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 20:38:34,244 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.11ms. Allocated memory is still 180.4MB. Free memory was 114.7MB in the beginning and 112.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:38:34,244 INFO L158 Benchmark]: Boogie Preprocessor took 28.28ms. Allocated memory is still 180.4MB. Free memory was 112.6MB in the beginning and 110.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:38:34,245 INFO L158 Benchmark]: RCFGBuilder took 708.03ms. Allocated memory is still 180.4MB. Free memory was 110.9MB in the beginning and 86.2MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-20 20:38:34,245 INFO L158 Benchmark]: TraceAbstraction took 60224.23ms. Allocated memory was 180.4MB in the beginning and 654.3MB in the end (delta: 474.0MB). Free memory was 85.8MB in the beginning and 465.4MB in the end (delta: -379.6MB). Peak memory consumption was 340.1MB. Max. memory is 16.1GB. [2022-11-20 20:38:34,245 INFO L158 Benchmark]: Witness Printer took 70.84ms. Allocated memory is still 654.3MB. Free memory was 465.4MB in the beginning and 459.1MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 20:38:34,247 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 134.2MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 444.30ms. Allocated memory is still 180.4MB. Free memory was 133.5MB in the beginning and 114.7MB in the end (delta: 18.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.11ms. Allocated memory is still 180.4MB. Free memory was 114.7MB in the beginning and 112.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.28ms. Allocated memory is still 180.4MB. Free memory was 112.6MB in the beginning and 110.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 708.03ms. Allocated memory is still 180.4MB. Free memory was 110.9MB in the beginning and 86.2MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 60224.23ms. Allocated memory was 180.4MB in the beginning and 654.3MB in the end (delta: 474.0MB). Free memory was 85.8MB in the beginning and 465.4MB in the end (delta: -379.6MB). Peak memory consumption was 340.1MB. Max. memory is 16.1GB. * Witness Printer took 70.84ms. Allocated memory is still 654.3MB. Free memory was 465.4MB in the beginning and 459.1MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 54]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 60.1s, OverallIterations: 14, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 9.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 14.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1502 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1464 mSDsluCounter, 4147 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3080 mSDsCounter, 730 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4442 IncrementalHoareTripleChecker+Invalid, 5172 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 730 mSolverCounterUnsat, 1067 mSDtfsCounter, 4442 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1096 GetRequests, 851 SyntacticMatches, 7 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5286 ImplicationChecksByTransitivity, 20.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=562occurred in iteration=13, InterpolantAutomatonStates: 164, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 14 MinimizatonAttempts, 383 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 39 LocationsWithAnnotation, 1738 PreInvPairs, 1909 NumberOfFragments, 2510 HoareAnnotationTreeSize, 1738 FomulaSimplifications, 6658 FormulaSimplificationTreeSizeReduction, 2.0s HoareSimplificationTime, 39 FomulaSimplificationsInter, 256831 FormulaSimplificationTreeSizeReductionInter, 12.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 1385 NumberOfCodeBlocks, 1385 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1569 ConstructedInterpolants, 0 QuantifiedInterpolants, 4055 SizeOfPredicates, 35 NumberOfNonLiveVariables, 2343 ConjunctsInSsa, 137 ConjunctsInUnsatCore, 24 InterpolantComputations, 12 PerfectInterpolantSequences, 765/825 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 3.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 29, DAG_INTERPRETER_EARLY_EXITS: 3, TOOLS_POST_APPLICATIONS: 39, TOOLS_POST_TIME: 0.7s, TOOLS_POST_CALL_APPLICATIONS: 10, TOOLS_POST_CALL_TIME: 1.7s, TOOLS_POST_RETURN_APPLICATIONS: 8, TOOLS_POST_RETURN_TIME: 0.5s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 53, TOOLS_QUANTIFIERELIM_TIME: 2.8s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.5s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 80, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 10, DOMAIN_JOIN_TIME: 0.4s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 29, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 1.6s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.6s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 8, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 410, DAG_COMPRESSION_RETAINED_NODES: 87, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 592]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 506]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: (!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) - InvariantResult [Line: 768]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0)) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || methaneLevelCritical == 0) || !(1 == systemActive)) || (((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && 1 == systemActive) && (\old(waterLevel) == waterLevel || waterLevel == 1)))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((methAndRunningLastTime == 0 && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || (((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && 1 == systemActive) && (\old(waterLevel) == waterLevel || waterLevel == 1)))) && ((((!(\old(methAndRunningLastTime) == 0) || ((pumpRunning == 0 && tmp == methaneLevelCritical) && !(tmp == 0))) || !(1 == systemActive)) || \old(pumpRunning) == 0) || (((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == methaneLevelCritical))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) - InvariantResult [Line: 516]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 474]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((((((((((((((((((tmp <= 0 && 0 <= tmp) && \old(waterLevel) == waterLevel) || !(unknown-#length-unknown[12] == 25)) || !(\old(pumpRunning) == 0)) || !(unknown-#memory_int-unknown[1][0] == 48)) || !(#NULL == 0)) || !(9 == unknown-#length-unknown[11])) || !(\old(methAndRunningLastTime) == 0)) || !(9 == unknown-#length-unknown[5])) || !(30 == unknown-#length-unknown[7])) || !(31 == unknown-#length-unknown[2])) || !(\valid[12] == 1)) || !(2 == unknown-#length-unknown[1])) || !(9 == unknown-#length-unknown[14])) || !(\old(waterLevel) == 1)) || !(unknown-#length-unknown[15] == 25)) || !(\valid[6] == 1)) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(head == 0)) || !(\valid[11] == 1)) || !(unknown-#length-unknown[9] == 21)) || !(30 == unknown-#length-unknown[10])) || !(\valid[15] == 1)) || !(unknown-#length-unknown[6] == 21)) || !(1 == \valid[5])) || !(unknown-#length-unknown[8] == 9)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(methaneLevelCritical == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(\valid[1] == 1)) || !(\valid[8] == 1)) || !(30 == unknown-#length-unknown[13])) || !(\valid[4] == 1)) || !(#NULL == 0)) || !(\valid[7] == 1)) || !(\valid[10] == 1)) || !(\valid[14] == 1)) || !(\valid[13] == 1)) || !(30 == unknown-#length-unknown[4])) || !(\valid[2] == 1)) || !(\valid[9] == 1)) || !(head == 0)) || !(0 == systemActive)) || !(cleanupTimeShifts == 4)) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((((!(waterLevel == 1) && methAndRunningLastTime == 0) && tmp == methaneLevelCritical) && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || (((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && methAndRunningLastTime == 0) && tmp == methaneLevelCritical) && 1 == systemActive) && (\old(waterLevel) == waterLevel || waterLevel == 1)))) && ((!(\old(pumpRunning) == 0) || !(0 == systemActive)) || (pumpRunning == 0 && methAndRunningLastTime == 0))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || methaneLevelCritical == 0) || !(1 == systemActive)) || (((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && methAndRunningLastTime == 0) && tmp___0 == 0) && 1 == systemActive) && (\old(waterLevel) == waterLevel || waterLevel == 1)))) && ((((!(\old(methAndRunningLastTime) == 0) || (((((pumpRunning == 0 && methAndRunningLastTime == 0) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical) && tmp___0 == 0) && !(tmp == 0))) || !(1 == systemActive)) || \old(pumpRunning) == 0) || ((((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical)) - InvariantResult [Line: 482]: Loop Invariant Derived loop invariant: ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive)) && ((((((((((((((((((((((((((((((((((((((((((((!(unknown-#length-unknown[12] == 25) || !(\old(pumpRunning) == 0)) || !(unknown-#memory_int-unknown[1][0] == 48)) || !(#NULL == 0)) || !(9 == unknown-#length-unknown[11])) || !(\old(methAndRunningLastTime) == 0)) || !(9 == unknown-#length-unknown[5])) || !(30 == unknown-#length-unknown[7])) || !(31 == unknown-#length-unknown[2])) || !(\valid[12] == 1)) || !(2 == unknown-#length-unknown[1])) || !(9 == unknown-#length-unknown[14])) || !(\old(waterLevel) == 1)) || !(unknown-#length-unknown[15] == 25)) || !(\valid[6] == 1)) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(head == 0)) || !(\valid[11] == 1)) || !(unknown-#length-unknown[9] == 21)) || !(30 == unknown-#length-unknown[10])) || !(\valid[15] == 1)) || !(unknown-#length-unknown[6] == 21)) || !(1 == \valid[5])) || !(unknown-#length-unknown[8] == 9)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(methaneLevelCritical == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(\valid[1] == 1)) || (((tmp <= 0 && 0 <= tmp) && \old(waterLevel) == waterLevel) && \old(methAndRunningLastTime) == methAndRunningLastTime)) || !(\valid[8] == 1)) || !(30 == unknown-#length-unknown[13])) || !(\valid[4] == 1)) || !(#NULL == 0)) || !(\valid[7] == 1)) || !(\valid[10] == 1)) || !(\valid[14] == 1)) || !(\valid[13] == 1)) || !(30 == unknown-#length-unknown[4])) || !(\valid[2] == 1)) || !(\valid[9] == 1)) || !(head == 0)) || !(0 == systemActive)) || !(cleanupTimeShifts == 4))) && (((((((pumpRunning == 0 && tmp == methaneLevelCritical) && tmp == methaneLevelCritical) && !(tmp == 0)) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || \old(pumpRunning) == 0) || ((((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || (((((!(waterLevel == 1) && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == methaneLevelCritical) && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || ((pumpRunning == 0 && tmp == methaneLevelCritical) && (\old(waterLevel) == waterLevel || waterLevel == 1))) - InvariantResult [Line: 746]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(methAndRunningLastTime == 0)) && (((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(methAndRunningLastTime == 0)) - InvariantResult [Line: 710]: Loop Invariant Derived loop invariant: ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive)) && ((((((((((((((((((((((((((((((((((((((((((((!(unknown-#length-unknown[12] == 25) || !(\old(pumpRunning) == 0)) || !(unknown-#memory_int-unknown[1][0] == 48)) || !(#NULL == 0)) || !(9 == unknown-#length-unknown[11])) || !(\old(methAndRunningLastTime) == 0)) || !(9 == unknown-#length-unknown[5])) || !(30 == unknown-#length-unknown[7])) || !(31 == unknown-#length-unknown[2])) || !(\valid[12] == 1)) || !(2 == unknown-#length-unknown[1])) || !(9 == unknown-#length-unknown[14])) || !(\old(waterLevel) == 1)) || !(unknown-#length-unknown[15] == 25)) || !(\valid[6] == 1)) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(head == 0)) || !(\valid[11] == 1)) || !(unknown-#length-unknown[9] == 21)) || !(30 == unknown-#length-unknown[10])) || !(\valid[15] == 1)) || !(unknown-#length-unknown[6] == 21)) || !(1 == \valid[5])) || !(unknown-#length-unknown[8] == 9)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(methaneLevelCritical == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(\valid[1] == 1)) || !(\valid[8] == 1)) || !(30 == unknown-#length-unknown[13])) || !(\valid[4] == 1)) || !(#NULL == 0)) || !(\valid[7] == 1)) || !(\valid[10] == 1)) || \old(waterLevel) == waterLevel) || !(\valid[14] == 1)) || !(\valid[13] == 1)) || !(30 == unknown-#length-unknown[4])) || !(\valid[2] == 1)) || !(\valid[9] == 1)) || !(head == 0)) || !(0 == systemActive)) || !(cleanupTimeShifts == 4))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || methAndRunningLastTime == 0) || !(0 == systemActive))) && ((((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) - InvariantResult [Line: 917]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 926]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 905]: Loop Invariant Derived loop invariant: ((pumpRunning == 0 && splverifierCounter == 0) && !(0 == systemActive)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && splverifierCounter == 0) - InvariantResult [Line: 927]: Loop Invariant Derived loop invariant: ((((methAndRunningLastTime == 0 && methaneLevelCritical == 0) && 1 == systemActive) && splverifierCounter == 0) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && 1 == systemActive) && splverifierCounter == 0)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && splverifierCounter == 0) && 0 == systemActive) - InvariantResult [Line: 592]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((((((((((((((unknown-#length-unknown[15] == 25 && 9 == unknown-#length-unknown[5]) && unknown-#length-unknown[9] == 21) && 30 == unknown-#length-unknown[7]) && 1 == \valid[5]) && unknown-#length-unknown[3] == 12) && \valid[15] == 1) && pumpRunning == 0) && methAndRunningLastTime == 0) && \valid[9] == 1) && unknown-#length-unknown[12] == 25) && \valid[11] == 1) && methaneLevelCritical == 0) && 30 == unknown-#length-unknown[4]) && 31 == unknown-#length-unknown[2]) && head == 0) && 2 == unknown-#length-unknown[1]) && unknown-#length-unknown[8] == 9) && \valid[3] == 1) && \valid[7] == 1) && 30 == unknown-#length-unknown[13]) && 1 == systemActive) && 30 == unknown-#length-unknown[10]) && \valid[12] == 1) && \result == tmp) && \valid[4] == 1) && \valid[1] == 1) && unknown-#length-unknown[6] == 21) && \valid[14] == 1) && retValue_acc == \result) && 9 == unknown-#length-unknown[14]) && \valid[0] == 0) && head == 0) && \valid[2] == 1) && #NULL == 0) && 9 == unknown-#length-unknown[11]) && waterLevel == 1) && retValue_acc == 1) && unknown-#memory_int-unknown[1][0] == 48) && \valid[6] == 1) && unknown-#memory_int-unknown[1][1] == 0) && \valid[10] == 1) && \valid[8] == 1) && \valid[13] == 1) && 0 < unknown-#StackHeapBarrier-unknown) && cleanupTimeShifts == 4) && #NULL == 0 - InvariantResult [Line: 806]: Loop Invariant Derived loop invariant: ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || (pumpRunning == 0 && aux-isMethaneAlarm()-aux == methaneLevelCritical)) || !(methAndRunningLastTime == 0)) && (((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || !(methAndRunningLastTime == 0))) && (((!(1 == systemActive) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) || !(methAndRunningLastTime == 0)) RESULT: Ultimate proved your program to be correct! [2022-11-20 20:38:34,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f2e732-bd7e-43c2-ab44-490df9e75f04/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE